Module: Smith

Includes:
Logger
Defined in:
lib/smith/commands/agency/restart.rb,
lib/smith.rb,
lib/smith/agent.rb,
lib/smith/cache.rb,
lib/smith/utils.rb,
lib/smith/config.rb,
lib/smith/daemon.rb,
lib/smith/logger.rb,
lib/smith/command.rb,
lib/smith/version.rb,
lib/smith/bootstrap.rb,
lib/smith/self_pipe.rb,
lib/smith/acl_parser.rb,
lib/smith/exceptions.rb,
lib/smith/agent_cache.rb,
lib/smith/amqp_errors.rb,
lib/smith/acl_compiler.rb,
lib/smith/agent_config.rb,
lib/smith/command_base.rb,
lib/smith/object_count.rb,
lib/smith/agent_process.rb,
lib/smith/messaging/util.rb,
lib/smith/commands/common.rb,
lib/smith/messaging/queue.rb,
lib/smith/agent_monitoring.rb,
lib/smith/messaging/sender.rb,
lib/smith/commands/template.rb,
lib/smith/messaging/factory.rb,
lib/smith/messaging/requeue.rb,
lib/smith/queue_definitions.rb,
lib/smith/application/agency.rb,
lib/smith/messaging/receiver.rb,
lib/smith/messaging/responder.rb,
lib/smith/commands/agency/kill.rb,
lib/smith/commands/agency/list.rb,
lib/smith/commands/agency/stop.rb,
lib/smith/commands/smithctl/rm.rb,
lib/smith/commands/agency/group.rb,
lib/smith/commands/agency/start.rb,
lib/smith/commands/smithctl/acl.rb,
lib/smith/commands/smithctl/pop.rb,
lib/smith/commands/smithctl/top.rb,
lib/smith/messaging/acl/default.rb,
lib/smith/commands/agency/agents.rb,
lib/smith/commands/agency/logger.rb,
lib/smith/commands/smithctl/dump.rb,
lib/smith/commands/smithctl/push.rb,
lib/smith/messaging/amqp_options.rb,
lib/smith/commands/agency/version.rb,
lib/smith/messaging/queue_factory.rb,
lib/smith/commands/agency/metadata.rb,
lib/smith/commands/smithctl/status.rb,
lib/smith/messaging/acl_type_cache.rb,
lib/smith/messaging/message_counter.rb,
lib/smith/commands/smithctl/commands.rb,
lib/smith/commands/smithctl/firehose.rb,
lib/smith/messaging/queue_definition.rb,
lib/smith/commands/smithctl/subscribe.rb,
lib/smith/commands/agency/object_count.rb

Overview

FIXME. This needs to be either fixed up or removed. It dumps the output into the log at the moment which isn’t the place for it. It should also be a smithctl command rather than an agency command.

Defined Under Namespace

Modules: ACL, AgentProcessObserver, Commands, LoggeMethods, Logger, Messaging, ObjectCount, QueueDefinitions, Utils Classes: ACLCompiler, ACLParser, AclTypeCache, Agency, AgencyRunning, Agent, AgentBootstrap, AgentCache, AgentConfig, AgentMonitoring, AgentProcess, Cache, Command, CommandBase, Config, ConfigNotFoundError, Daemon, MissingConfigItemError, QueueDefinition, QueueFactory, SelfPipe, UnknownEnvironmentError

Constant Summary collapse

VERSION = 
"0.8.2"

Class Method Summary collapse

Methods included from Logger

included

Class Method Details

.acl_cache_directory ⇒ Object

Return the acl cache path.



66
67
68
69
70
 
# File 'lib/smith.rb', line 66

def acl_cache_directory
  cache_directory.join('acl').tap do |path|
    check_path(path, true)
  end
end

.acl_directories ⇒ Object 



57
58
59
 
# File 'lib/smith.rb', line 57

def acl_directories
  config.agency.acl_directories
end

.agent_directories ⇒ Object 



48
49
50
 
# File 'lib/smith.rb', line 48

def agent_directories
  config.agency.agent_directories
end

.cache_directory ⇒ Object 



61
62
63
 
# File 'lib/smith.rb', line 61

def cache_directory
  Utils.check_and_create_directory(config.agency.cache_directory)
end

.compile_acls ⇒ Object 



72
73
74
75
 
# File 'lib/smith.rb', line 72

def compile_acls
  @compiler = ACLCompiler.new
  @compiler.compile
end

.config ⇒ Object 



36
37
38
 
# File 'lib/smith.rb', line 36

def config
  Config.get
end

.config_path ⇒ Object 



40
41
42
 
# File 'lib/smith.rb', line 40

def config_path
  Smith.config.path
end

.connection ⇒ Object

Raises:

  • (RuntimeError) 


27
28
29
30
 
# File 'lib/smith.rb', line 27

def connection
  raise RuntimeError, "You must run this in a Smith.start block" if @connection.nil?
  @connection
end

.environment ⇒ Object 



32
33
34
 
# File 'lib/smith.rb', line 32

def environment
  ENV['SMITH_ENV'] || 'development'
end

.hostname ⇒ Object

Convenience method to get the hostname



53
54
55
 
# File 'lib/smith.rb', line 53

def hostname
  Socket.gethostname
end

.root_path ⇒ Object 



44
45
46
 
# File 'lib/smith.rb', line 44

def root_path
  Pathname.new(__FILE__).dirname.parent.expand_path
end

.running? ⇒ Boolean

Returns:

  • (Boolean) 


77
78
79
 
# File 'lib/smith.rb', line 77

def running?
  EM.reactor_running?
end

.shutdown_hook(&block) ⇒ Object 



133
134
135
 
# File 'lib/smith.rb', line 133

def shutdown_hook(&block)
  EM.add_shutdown_hook(&block)
end

.start(opts = {}, &block) ⇒ Object 



81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
 
# File 'lib/smith.rb', line 81

def start(opts={}, &block)

  if EM.epoll? && Smith.config.eventmachine.epoll
    logger.debug { "Using epoll for I/O event notification." }
    EM.epoll
  end

  if EM.kqueue? && Smith.config.eventmachine.kqueue
    logger.debug { "Using kqueue for I/O event notification." }
    EM.kqueue
  end

  connection_settings = {
    :on_tcp_connection_failure => method(:tcp_connection_failure_handler),
    :on_possible_authentication_failure => method(:authentication_failure_handler)
  }

  AMQP.start(config.amqp.broker.uri.to_s, connection_settings) do |connection|
    @connection = connection

    connection.on_connection do
      logger.info { "Connected to: AMQP Broker: #{broker_identifier(connection)}" } unless opts[:quiet]
    end

    # FIXME This should go in the config.
    reconnection_delay = 5

    connection.on_tcp_connection_loss do |connection, settings|
      logger.info { "Reconnecting to AMQP Broker: #{broker_identifier(connection)} in #{reconnection_delay}s" }
      connection.reconnect(false, reconnection_delay)
    end

    connection.after_recovery do |connection|
      logger.info { "Connection with AMQP Broker restored: #{broker_identifier(connection)}" } unless opts[:quiet]
    end

    connection.on_error do |connection, connection_close|
      # If the broker is gracefully shutdown we get a 320. Log a nice message.
      if connection_close.reply_code == 320
        logger.warn { "AMQP Broker shutdown: #{broker_identifier(connection)}" }
      else
        logger.warn {  connection_close.reply_text }
      end
    end

    # This will be the last thing run by the reactor.
    shutdown_hook { logger.debug { "Reactor Stopped" } }

    block.call
  end
end

.stop(immediately = false, &blk) ⇒ Object 



137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
 
# File 'lib/smith.rb', line 137

def stop(immediately=false, &blk)
  shutdown_hook(&blk) if blk

  if running?
    if immediately
      EM.next_tick do
        @connection.close { EM.stop_event_loop }
      end
    else
      EM.add_timer(1) do
        @connection.close { EM.stop_event_loop }
      end
    end
  else
    logger.fatal { "Eventmachine is not running, exiting with prejudice" }
    exit!
  end
end